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PDB 87

Construction Project
Road expansion project Erlangen-Bruck/Eltersdorf - Slide-in railway bridge across BAB A3
Location
  • Erlangen-Bruck/Eltersdorf
Client
  • DB Netz AG
Planning
  • GMG lngenieurgesellschaft Dresden - Prof. Dr.-lng. Karsten Geißler
Investment volume
  • approx. EUR 9.1 million
Construction time
  • 9 months
Contracted services BMG
  • § 55.8 HOAI-Bauoberleitung (Site Management)
  • Construction management
  • Contract management
Completed constructions
  • Double-tracked steel arch bridge as railway overpass (L = 74.80 m)
  • Excavations and construction work parallel to railway embankment
  • Construction of substructures
  • Construction of a reinforced steel frame to provide the base for a dirt road
Construction method
  • Slide-in bridge
Special features
  • Phases of the slide-in process
    • Establishment of starting position and locating (SPMT) underneath the bridge
    • Bridge movement approx. 30.00 m from place of assembly to final location
    • Transfer of bridge and installation of stranded wire cables for the sliding procedure
    • Pulling the bridge
      • by 21.00 m (southern end cross beam positioned above northern abutment)
      • by 29.00 m (southern end cross beam positioned above northern temporary tower)
      • by 24.00 m (southern end cross beam positioned above temporary tower centre)
      • by 24.00 m (the superstructure is positioned elevated above the final position)
    • Removal of intermediate supports
    • De-pilling of superstructure at end position
  • Duration of shift (t = 7 d)
  • Shift speed (v = 10.00-15.00 m/h)
Utilization
  • Intercity railway bridge (design speed (VE= 300 km/h)
Construction
  • Steel arch bridge as slide-in design
  • Arches delivered in 3 segments and 16 flat steel hangers
  • Flat steel panels delivered in 9 segments in 3 segments
  • Welding of all segments at construction site
  • Width between outside arches (W = 10.60 m)
  • Height of stiffening girder (H = 2.90 m)
  • Construction height of arches at top (S = 0.70 m)
  • Total weight of steel construction (G = 650 t)